package collection;

import java.util.ArrayList;
import java.util.Collection;

//集合间的操作
public class CollectionOperDemo {
    public static void main(String[] args) {
        Collection c1 = new ArrayList();
        c1.add("java");
        c1.add("c++");
        c1.add(".net");
        System.out.println("c1:"+c1);//c1:[java ,c++ ,.net]

        Collection c2 = new ArrayList();
        c2.add("android");
        c2.add("ios");
        c2.add("java");
        System.out.println("c2:"+c2);//c2:[android ,ios ,java]

        c1.addAll(c2); //将c2添加到c1中
        System.out.println("c1:"+c1);//c1:[java, c++, .net, android, ios, java]
        System.out.println("c2:"+c2);//c2:[android, ios, java]

        Collection c3 = new ArrayList();
        c3.add("java");
        c3.add("ios");
        c3.add("php");
        System.out.println("c3:"+c3);//c3:[java, ios, php]

        boolean contains = c1.containsAll(c3);
        System.out.println("是否包含:"+contains);//判断c1集合中是否包含c3集合中的所有元素

        //取交集:c1中仅保留与c3所共有的元素,而c3不变
        c1.retainAll(c3);                                     //[java, c++, .net, android, ios, java]
        System.out.println("c1:"+c1);//c1:[java, ios, java]
        System.out.println("c3"+c3);//c3[java, ios, php]

        //删交集:删除c1中含有c3相同的元素,而c3不变
        c1.removeAll(c3);
        System.out.println("c1:"+c1);//c1:[]
        System.out.println("c3:"+c3);//c3:[java, ios, php]








    }
}
